MsgPackで不一致のフリー（）/削除

Question

私のプログラムでMsgpackを使用しようとしています。 誰かがmsgpack wiki：http://wiki.msgpack.org/pages/viewpage.action?pageId=1081387の次の例（ストリーミング機能）で私を助けて、このライブラリをストリーミング機能で使用するより正確な例を提供できますか？

#include <msgpack.hpp> 
#include <iostream> 
#include <string> 

int main(void) { 
    // serializes multiple objects using msgpack::packer. 
    msgpack::sbuffer buffer; 

    msgpack::packer<msgpack::sbuffer> pk(&buffer); 
    pk.pack(std::string("Log message ... 1")); 
    pk.pack(std::string("Log message ... 2")); 
    pk.pack(std::string("Log message ... 3")); 

    // deserializes these objects using msgpack::unpacker. 
    msgpack::unpacker pac; 

    // feeds the buffer. 
    pac.reserve_buffer(buffer.size()); 
    memcpy(pac.buffer(), buffer.data(), buffer.size()); 
    pac.buffer_consumed(buffer.size()); 

    // now starts streaming deserialization. 
    msgpack::unpacked result; 
    while(pac.next(&result)) { 
     std::cout << result.get() << std::endl; 
    } 

    // results: 
    // $ g++ stream.cc -lmsgpack -o stream 
    // $ ./stream 
    // "Log message ... 1" 
    // "Log message ... 2" 
    // "Log message ... 3" 
} 

Valgrindのは、それが次のエラーを持っていることを言う：すべては、この例ではOKですよう

==11325== 1 errors in context 1 of 2: 
==11325== Mismatched free()/delete/delete [] 
==11325== at 0x48CC919: operator delete(void*) (vg_replace_malloc.c:387) 
==11325== by 0x804A623: std::auto_ptr<msgpack::zone>::reset(msgpack::zone*) (auto_ptr.h:242) 
==11325== by 0x804A2E1: msgpack::unpacker::next(msgpack::unpacked*) (unpack.hpp:229) 
==11325== by 0x8049E93: main (pack2.cpp:24) 
==11325== Address 0x6e447c0 is 0 bytes inside a block of size 8,220 alloc'd 
==11325== at 0x48CD876: malloc (vg_replace_malloc.c:236) 
==11325== by 0x48DABC9: msgpack_zone_new (zone.c:198) 
==11325== by 0x48D811F: msgpack_unpacker_release_zone (unpack.c:333) 
==11325== by 0x804A3DA: msgpack::unpacker::release_zone() (unpack.hpp:261) 
==11325== by 0x804A31C: msgpack::unpacker::next(msgpack::unpacked*) (unpack.hpp:234) 
==11325== by 0x8049E93: main (pack2.cpp:24) 
==11325== 
==11325== 
==11325== 2 errors in context 2 of 2: 
==11325== Mismatched free()/delete/delete [] 
==11325== at 0x48CC919: operator delete(void*) (vg_replace_malloc.c:387) 
==11325== by 0x804A623: std::auto_ptr<msgpack::zone>::reset(msgpack::zone*) (auto_ptr.h:242) 
==11325== by 0x804A335: msgpack::unpacker::next(msgpack::unpacked*) (unpack.hpp:234) 
==11325== by 0x8049E93: main (pack2.cpp:24) 
==11325== Address 0x6e3c5c0 is 0 bytes inside a block of size 8,220 alloc'd 
==11325== at 0x48CD876: malloc (vg_replace_malloc.c:236) 
==11325== by 0x48DABC9: msgpack_zone_new (zone.c:198) 
==11325== by 0x48D8211: msgpack_unpacker_init (unpack.c:194) 
==11325== by 0x804A08D: msgpack::unpacker::unpacker(unsigned int) (unpack.hpp:187) 
==11325== by 0x8049DC5: main (pack2.cpp:15) 

Answer 1

問題が https://github.com/msgpack/msgpack/pull/90

Answer 2

が見えます。 valgrindコールトレースによれば、バグはMsgpackライブラリの中にある程度です。